Software Overview
30
SBOU123A – March 2012 – Revised September 2016
Copyright © 2012–2016, Texas Instruments Incorporated
XTR108EVM-USB Evaluation Board and Software Tutorial
Table 23. Overscale Threshold
OS3
OS2
OS1
OS0
V
O
Overscale
Threshold
I
O
Overscale
Threshold
R
VI
= 6.34 k
Ω
0
0
0
0
2.625 V
20.7 mA
0
0
0
1
2.6875 V
21.2 mA
0
0
1
0
2.75 V
21.7 mA
0
0
1
1
2.8125 V
22.2 mA
0
1
0
0
2.875 V
22.7 mA
0
1
0
1
2.9375 V
23.2 mA
0
1
1
0
3.0 V
23.7 mA
0
1
1
1
3.0625 V
24.2 mA
1
0
0
0
3.125 V
24.6 mA
1
0
0
1
3.1875 V
25.1 mA
1
0
1
0
3.25 V
25.6 mA
1
0
1
1
3.3125 V
26.1 mA
1
1
0
0
3.375 V
26.6 mA
1
1
0
1
3.4375 V
27.1 mA
1
1
1
0
3.5 V
27.6 mA
1
1
1
1
3.5625 V
28.1 mA
Table 24. Underscale Threshold
US2
US1
US0
V
O
Underscale
Threshold
I
O
Underscale
Threshold
R
VI
= 6.34 k
Ω
0
0
0
450 mV
3.55 mA
0
0
1
425 mV
3.35 mA
0
1
0
400 mV
3.15 mA
0
1
1
375 mV
2.96 mA
1
0
0
350 mV
2.76 mA
1
0
1
325 mV
2.56 mA
1
1
0
300 mV
2.37 mA
1
1
1
275 mV
2.17 mA
